402251162651231 has 4 divisors (see below), whose sum is σ = 423422276475000. Its totient is φ = 381080048827464.

The previous prime is 402251162651201. The next prime is 402251162651249. The reversal of 402251162651231 is 132156261152204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402251162651231 - 2¹⁴ = 402251162634847 is a prime.

It is a super-2 number, since 2×402251162651231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402251162651201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10585556911856 + ... + 10585556911893.

It is an arithmetic number, because the mean of its divisors is an integer number (105855569118750).

Almost surely, 2^{402251162651231} is an apocalyptic number.

402251162651231 is a deficient number, since it is larger than the sum of its proper divisors (21171113823769).

402251162651231 is a wasteful number, since it uses less digits than its factorization.

402251162651231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21171113823768.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 402251162651231 in words is "four hundred two trillion, two hundred fifty-one billion, one hundred sixty-two million, six hundred fifty-one thousand, two hundred thirty-one".